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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"wind erosion"”.
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Landscape scale measurements of wind erosion of volcanic materials in the Hekla area
Wind erosion is one of the principal factors responsible for desertification. Due to volcanic activity, harsh climate and unsustainable land use, Iceland has extensive desert areas where wind erosion in common. The objectives of the present study were to i) measure aeolian sand transport on a …
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An investigation of the areas of potential wind erosion in the Cape Province, Republic of South Africa
Soil erosion is regarded as a serious problem throughout the world. Erosion is caused by both water and wind. Although the two usually occur together, wind erosion has received little attention with the exception of the problems associated with croplands. Wind erosion can, however, also be a …
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Advancements for the Numerical Simulation of Free Fall Penetrometers and the Analysis of Wind Erosion of Sands
… infrastructure will be subjected to increased erosion and scouring, endangering the people they are meant to protect. Understanding soil dynamics and fluid interaction is crucial to predict the effects of sand erosion. In particular, the study of wind erosion of sands in coastal dunes is …
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A comparison of the effects of two different grazing systems on community attributes of eastern Karoo vegetation
Soil erosion is regarded as a serious problem throughout the world. Erosion is. caused by both water and wind. Al though the two usually occur ·together, wind erosion has received little attention with the exception of the problems associated with croplands. Wind erosion can, however, also be a …
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Definizione di una metodologia integrata per la stima delle emissioni di PM da superfici di materiali granulari esposte all’erosione eolica
Wind erosion is a key mechanism responsible for the emission of particulate matter (PM) from granular surfaces (industrial wind erosion). In industrial environments such as mining and metallurgical plants, granular materials, typically stored in open yards, can act as fugitive dust sources and …
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Reconstruction of multiple climate variables at high spatiotemporal resolution based on Big Earth data platform
… wave datasets, an updated database of water and wind erosion. For further use in practice, these datasets are freely accessible and online web application has been developed for academic research on climate change under accelerated global warming. The main findings of this thesis are: (1) A …
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Soil erosion and land degradation in the Swartland and Sandveld, Western Cape province, South Africa : a re-evaluation
… making this area vulnerable to varying erosion rates. Land use in the Swartland and Sandveld is mainly agricultural. Soil erosion is driven by the force of wind and or water. Sheet flow is what is considered as unconstrained water erosion together with rainsplash, while piping, rill and …
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Growing crops for biofuel and forage while conserving soil and water
… organic carbon (SOC) dynamics, and water and wind erosion as compared with row crops, b) assess the impacts of growing WSG on biomass and forage production and quality and c) determine the most adaptable WSG species to dryland conditions. A number of dedicated energy crops and their …
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An investigation of the environmental impact of surface diamond mining along the arid west coast of South Africa
… magnified significantly through the process of wind erosion. It is argued that much environmental impact can be prevented if the objective of environmental protection was incorporated into the management of mine sites and that unavoidable impact can be mitigated by rehabilitation,which is a …
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The role of wind and water in shaping earth's plateaus
… to provide a better understanding of the role of wind and water in shaping Earth’s Cenozoic orogenic plateaus - prominent high-elevation, low relief sectors in the interior of Cenozoic mountain belts. In particular, the feedbacks between surface uplift, the build-up of topography and ensuing …
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Monitoring desertification in south west Tripoli using multi-temporal remotely sensing data and GIS
… of rainfall and the prevalence of strong wind which significantly affects the stability of the fragile ecosystem. The potential of this study was to offer answers to the understanding of desertification indicators and has identified criteria for desertification assessment and the creation …
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Managing rangeland change in New South Wales for landscape repair
… which make implementing solutions to ongoing erosion difficult. Monitoring wind erosion is one metric that has been used as a proxy for landscape condition, with the focus on direct measurement of dust emissions. However, in the past decade there has been a pivot towards using remote sensing …
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Estimation of Pm-10 from vacant lands in the Las Vegas valley
… amount of PM-10 entering the air stream during a wind erosion event. Over one hundred sixty soil samples were analyzed for soil particle size distribution, and a portable wind tunnel was constructed and operated in the field on fifty-two sites; The study sites covered seven of the nine major US …
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Integrating Sub-Centimeter Resolution Photogrammetry with a Surface Roughness Correction Factor Applied to PI-SWERL Measurements
… of the development of the Portable In-situ Wind Erosion Laboratory (i.e., PI-SWERL) along with existing limitations for adjusting dust emission measurements for microtopographic surface roughness. A new method for characterizing the surface roughness correction factor, alpha (α), is …
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Remote Sensing and Terramechanics Study of Mars using Orbital and Rover Data Sets
… and monohydrated sulfates. After a period of wind erosion, these deposits were partially and unconformably covered by the second sedimentary unit, a discontinuous unit containing crystalline hematite and polyhydrated sulfate material. These sedimentary deposits were formed by evaporite …
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Rhizosphere Bacteria and Phytostabilization Success: The Association Between Bacteria, Plant Establishment and Metal(loid) Immobilization in Metalliferous Mine Tailings
… metalliferous mine tailings to prevent wind erosion and contamination of nearby communities and the environment. However, plant establishment during phytostabilization of pyritic legacy mine tailings in semiarid regions is challenging due to particularly extreme conditions including low …
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La vicia villosa como cultivo de cobertura : efectos de corto plazo sobre el suelo y la productividad del maíz bajo riego en el valle bonaerense del Río Colorado
… Although the re-gion soil is sensitive to wind erosion, many times is kept free of weeds during the fallow period through tillage or the application of agrochemicals. The use of hairy vetch (Vicia villosa Roth) as cover crops (CC) in the CRV irrigated area previous to cash crops can be a …
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Bog in a Box: Is Long Term Peat Storage for Future Restoration Viable?
… bog . In addition, climatic factors such as wind erosion will present a further barrier to the rehabilitation of the decommissioned site, as supported by results from a study of a local restored site and from an outdoor mesocosm study sited at the Shetland Gas Plant. In that mesoscom study …
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Variability, origin and physical characteristics of dust aerosol in Iceland
… Icelandic dust storms among the most extreme wind erosion events recorded on Earth. First experiments on optical properties of volcanic dust in the laboratory show that Icelandic dust has same or lower spectral reflectance than Black Carbon. This indicates that climate forcing of Icelandic …
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Aeolian dust emission dynamics across spatial scales: landforms, controls and characteristics
… systems. A PI-SWERL (Portable In-Situ Wind ERosion Lab) wind tunnel was used to measure the emission potential of the Landsat derived targets. The most emissive sources were paleostockpiles of alluvial silt deposits and associated degraded nebkhas within the Kuiseb River Delta. These …
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